Home / 686,832.16-947,795.44-380,884.56

Finding the Fourth Proportional to 686,832.16, 947,795.44 and 380,884.56

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Solution

The fourth proportional to 686,832.16, 947,795.44 and 380,884.56 is: 525,602.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,832.16 : 947,795.44 = 380,884.56 : x
  2. Step 2: Convert to fraction form
    686,832.16/947,795.44 = 380,884.56/x
  3. Step 3: Cross multiply
    686,832.16x = 947,795.44 × 380,884.56
  4. Step 4: Simplify right side
    686,832.16x = 361,000,649,134.41
  5. Step 5: Solve for x
    x = 361,000,649,134.41/686,832.16
  6. Step 6: Final answer
    x = 525,602.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.